W3School TIY
编辑您的代码：
<!DOCTYPE html> <html> <head> <script> function clickCounter() { if(typeof(Storage) !== "undefined") { if (sessionStorage.clickcount) { sessionStorage.clickcount = Number(sessionStorage.clickcount)+1; } else { sessionStorage.clickcount = 1; } document.getElementById("result").innerHTML = "在本 session 中，您已经点击这个按钮 " + sessionStorage.clickcount + " 次。"; } else { document.getElementById("result").innerHTML = "抱歉！您的浏览器不支持 Web Storage ..."; } } </script> </head> <body> <p><button onclick="clickCounter()" type="button">请点击这里</button></p> <div id="result"></div> <p>请点击按钮使计数器递增。</p> <p>请关闭浏览器或标签页，然后再试一次，计数器会重置。</p> </body> </html>
查看结果: